Shares of CrowdStrike Holdings Inc. tumbled nearly 9% in after-hours trading Tuesday, after the cybersecurity company’s guidance disappointed investors.The company also provided new disclosures about its recovery from the July 19 service outage that rippled across the global technology landscape. For the latest quarter, CrowdStrike reported $21 million in costs relating to the flawed software update. That brought the fiscal year’s total to$60.1 million. ...